About a week ago, T-Mobile announced that it would finally be brining the iPhone 5 to its wireless network. The company also made plans to bring HD Voice service to its LTE network.

Not to be outdone, AT&T has now announced that it will also add HD Voice service later this year. HD Voice provides users with higher quality (High Definition) audio, and requires support from the calling network and the devices making the call. That means that the network, your device, and the device of the person you're calling all have to support HD Voice capability.